Adversarial Collaborative Neural Network for Robust Recommendation

Abstract

Most of recent neural network(NN)-based recommendation techniques mainly focus on improving the overall performance, such as hit ratio for top-N recommendation, where the users' feedbacks are considered as the ground-truth. In real-world applications, those feedbacks are possibly contaminated by imperfect user behaviours, posing challenges on the design of robust recommendation methods. Some methods apply man-made noises on the input data to train the networks more effectively (e.g. the collaborative denoising auto-encoder). In this work, we propose a general adversarial training framework for NN-based recommendation models, improving both the model robustness and the overall performance. We apply our approach on the collaborative auto-encoder model, and show that the combination of adversarial training and NN-based models outperforms highly competitive state-of-the-art recommendation methods on three public datasets.